Dietary carbohydrates in pet food help meet the pet’s physiological need for glucose. However, due to the ancestral origins of dogs and cats, some owners may question whether carbohydrates should be a part of their pets’ diet.

Protein is a key nutrient for dogs and cats and a source of amino acids, the 'building blocks' used to build new proteins in the body. Irrespective of the pet’s age, protein plays many important roles in the body.

Purina was the first to use prebiotics in pet food and is a leader in the field. What are the benefits of prebiotics to pets?

Grains provide valuable nutrients, but pet owners may believe that grains are “fillers” or that they may be a source of food allergies.

Gluten-free diets are increasingly popular in human nutrition and this in turn can influence pet food decisions. What exactly is gluten and why is it found in pet food?

Vitamins are important nutrients for pets and people. What are their functions, and should pets be given vitamin supplements?

Similar to human foods, ingredients used in pet foods come from a number of sources. Many are obtained directly from animal or plant raw materials, but they can also be manufactured (or synthesized) and are referred to as ‘synthetic’ ingredients. What types of synthetic ingredients are used in pet foods and what is their role?

Dietary antioxidants support pet health and help preserve the nutritional quality of pet food. Learn more about the important ways that antioxidants contribute to better, longer lives for pets.

Various cooking processes are used in preparing commercial pet foods to ensure delivery of highly nutritious, palatable products. The methods used are determined by the final form (e.g., a dry or wet food), desired texture and visual properties, and packaging. Common forms of pet food include dry extruded kibbles and canned wet food.

High fiber diets are often recommended for people to support a healthy digestion. What is the role of fiber in pet foods?

Vegetarians may choose a meat free diet for many reasons including concerns for health, animal welfare, and environmental sustainability. For similar reasons, some pet owners may wonder if a vegetarian diet is an acceptable option for their pet.

Pet owners are increasingly interested in supplements for their pets. Since all supplements are not the same, their use and selection for an individual pet should be considered carefully. Veterinarians should ask about the use of supplements as part of a pet’s diet history.